AI_Project_3.MainPage.RemovefromTaken_Click C# (CSharp) Method

        private void RemovefromTaken_Click(object sender, RoutedEventArgs e)
        {
            int selectedItem = this.TakenClasses.SelectedIndex;

            if (selectedItem >= 0)
            {
                Class c = majorinit.listOfClassesTaken.ElementAt(selectedItem);
                majorinit.listOfClassesTaken.Remove(c);
                this.TakenClasses.ItemsSource = majorinit.listOfClassesTaken;
            }
        }